\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\begin{document}
\small
\begin{tikzpicture}[>=latex,scale=1]
  \useasboundingbox(-1.2,-3.55)rectangle(1.2,3.15);
  \tkzDefPoints{0/0/O,0/1.5/A,0.6/0.35/B}
  \tkzDefPointBy[translation = from B to A](O)\tkzGetPoint{C}
  \draw[->,thick] (O)--(C)node[left]{$F_1$};
  \draw[->,thick] (O)--(B)node[right]{$F_2$};
  \draw[->,thick] (O)--++(0,-1.5)node[below]{$F_3$};
  \draw[->,thick,densely dashed] (O)--(A)node[above]{$F$};
  \draw[densely dashed](A)--(B)(A)--(C);
  \tkzLabelPoints[below left](O)
  % \tkzDrawSegments[densely dashed,semithick](A,B A,C)
\end{tikzpicture}
\end{document}